It is necessary to replenish energy after fitness. After exercising during the day, you can eat after about 50 to 60 minutes, and it is better to supplement it within two hours. Don't eat until you are hungry after exercising at night. The reason for not rushing to eat after fitness is that the body is extremely excited after exercise, blood circulation is accelerated, gastrointestinal peristalsis is weakened, and digestive juice secretion is reduced. As soon as the fitness is over, a large amount of blood is distributed in the exercise system, and the blood in the digestive system is reduced and the function is reduced. Therefore, eating immediately after exercise will affect the digestion and absorption of food, which is not good for your health. Over time, it will also cause gastrointestinal diseases such as indigestion and chronic gastritis. It's not appropriate to eat now. Eat them for 50-60 minutes after fitness, and your body can make efficient use of them. Within 1~2 hours after training, this time period is the time when you don't have to worry about getting fat. The absorption and utilization rate will be high, growth hormone will be secreted, and the body can be repaired.